1 files changed, 31 insertions, 14 deletions
diff --git a/t/perf/perf-lib.sh b/t/perf/perf-lib.sh
index 13e389367a..601d9f67dd 100644
--- a/t/perf/perf-lib.sh
+++ b/t/perf/perf-lib.sh
@@ -70,6 +70,19 @@ test_perf_do_repo_symlink_config_ () {
 	test_have_prereq SYMLINKS || git config core.symlinks false
 }
 
+test_perf_copy_repo_contents () {
+	for stuff in "$1"/*
+	do
+		case "$stuff" in
+		*/objects|*/hooks|*/config|*/commondir|*/gitdir|*/worktrees)
+			;;
+		*)
+			cp -R "$stuff" "$repo/.git/" || exit 1
+			;;
+		esac
+	done
+}
+
 test_perf_create_repo_from () {
 	test "$#" = 2 ||
 	BUG "not 2 parameters to test-create-repo"
@@ -77,20 +90,20 @@ test_perf_create_repo_from () {
 	source="$2"
 	source_git="$("$MODERN_GIT" -C "$source" rev-parse --git-dir)"
 	objects_dir="$("$MODERN_GIT" -C "$source" rev-parse --git-path objects)"
+	common_dir="$("$MODERN_GIT" -C "$source" rev-parse --git-common-dir)"
 	mkdir -p "$repo/.git"
 	(
 		cd "$source" &&
 		{ cp -Rl "$objects_dir" "$repo/.git/" 2>/dev/null ||
 			cp -R "$objects_dir" "$repo/.git/"; } &&
-		for stuff in "$source_git"/*; do
-			case "$stuff" in
-				*/objects|*/hooks|*/config|*/commondir)
-					;;
-				*)
-					cp -R "$stuff" "$repo/.git/" || exit 1
-					;;
-			esac
-		done
+
+		# common_dir must come first here, since we want source_git to
+		# take precedence and overwrite any overlapping files
+		test_perf_copy_repo_contents "$common_dir"
+		if test "$source_git" != "$common_dir"
+		then
+			test_perf_copy_repo_contents "$source_git"
+		fi
 	) &&
 	(
 		cd "$repo" &&
@@ -147,14 +160,16 @@ test_run_perf_ () {
 	"$GTIME" -f "%E %U %S" -o test_time.$i "$SHELL" -c '
 . '"$TEST_DIRECTORY"/test-lib-functions.sh'
 test_export () {
-	[ $# != 0 ] || return 0
-	test_export_="$test_export_\\|$1"
-	shift
-	test_export "$@"
+	test_export_="$test_export_ $*"
 }
 '"$1"'
 ret=$?
-set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export '"'&'"'/p" >test_vars
+needles=
+for v in $test_export_
+do
+	needles="$needles;s/^$v=/export $v=/p"
+done
+set | sed -n "s'"/'/'\\\\''/g"'$needles" >test_vars
 exit $ret' >&3 2>&4
 	eval_ret=$?
 
@@ -245,3 +260,5 @@ test_at_end_hook_ () {
 test_export () {
 	export "$@"
 }
+
+test_lazy_prereq PERF_EXTRA 'test_bool_env GIT_PERF_EXTRA false'